3. Equations and Inequalities
iGCSE (2021 Edition)
3.05 Quadratic equations with technology
Interactive practice questions
Solve the following equation by using the solve command on your calculator or otherwise.
$3x^2-x-10=0$3x2−x−10=0
Write all solutions together on the same line, separated by commas.
Easy
1min
Solve the following equation by using the solve command on your CAS calculator or otherwise.
$x^2+2x-\frac{21}{4}=0$x2+2x−214=0
Write all solutions together on the same line, separated by commas.
Easy
1min
Consider the equation $3x^2=6$3x2=6.
Easy
2min
Using the solve command on your calculator, or otherwise, find the roots of $4.6x^2+7.3x-3.7=0$4.6x2+7.3x−3.7=0.
Give your answers as decimal approximations to the nearest tenth. Write the decimal approximations for both roots on the same line, separated by a comma.
Easy
2min
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